May in Oldenburg averages a daily high of 18.4°C with nights around 8.2°C. Expect roughly 12.9 wet days totalling 57.7mm. Generally workable, with some weather to plan around.
Across the year, the best time to visit Oldenburg is May–September.
Based on FRIESOYTHE EDEWECHTERDAM, GM (19km), 1995–2024. 24 years of May data.